When he became president of the confederacy, jefferson davis believed that
A. southern slavery would remain safe under lincoln.
B. secession of the southern states should be encouraged
C. The south should declare war against the union to gain independence
D. lincoln would force states that seceded back into the union.

The answer is D., Lincoln would force states that seceded back into union.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.